CN115475831B - Material belt rolling method and material belt rolling system - Google Patents
Material belt rolling method and material belt rolling system Download PDFInfo
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- CN115475831B CN115475831B CN202211203097.7A CN202211203097A CN115475831B CN 115475831 B CN115475831 B CN 115475831B CN 202211203097 A CN202211203097 A CN 202211203097A CN 115475831 B CN115475831 B CN 115475831B
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- 239000000463 material Substances 0.000 title claims abstract description 214
- 238000005096 rolling process Methods 0.000 title claims abstract description 125
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 74
- 230000001681 protective effect Effects 0.000 claims abstract description 43
- 238000002955 isolation Methods 0.000 claims abstract description 12
- 229910052744 lithium Inorganic materials 0.000 claims description 42
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical group [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 40
- 230000006835 compression Effects 0.000 claims description 27
- 238000007906 compression Methods 0.000 claims description 27
- 238000003825 pressing Methods 0.000 claims description 23
- 238000009499 grossing Methods 0.000 claims description 16
- 238000001179 sorption measurement Methods 0.000 claims description 14
- 238000004804 winding Methods 0.000 claims description 13
- 238000007664 blowing Methods 0.000 claims description 10
- 229920002799 BoPET Polymers 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 5
- 238000005452 bending Methods 0.000 claims description 4
- 238000007781 pre-processing Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 11
- 230000001070 adhesive effect Effects 0.000 abstract description 11
- 230000008901 benefit Effects 0.000 abstract description 2
- 239000011888 foil Substances 0.000 description 33
- 239000012528 membrane Substances 0.000 description 12
- 230000004888 barrier function Effects 0.000 description 11
- 230000006872 improvement Effects 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 230000009471 action Effects 0.000 description 6
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- 230000037303 wrinkles Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002994 raw material Substances 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000000306 component Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000008719 thickening Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
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- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000000740 bleeding effect Effects 0.000 description 1
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- 238000013329 compounding Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229920002545 silicone oil Polymers 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/16—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section
- B21B1/18—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling wire rods, bars, merchant bars, rounds wire or material of like small cross-section in a continuous process
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B38/00—Ancillary operations in connection with laminating processes
- B32B38/10—Removing layers, or parts of layers, mechanically or chemically
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B2015/0057—Coiling the rolled product
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention provides a rolling method and a rolling system for a material belt, which comprise the following steps: s1, respectively arranging a protective film and a traction film on rolling equipment; s2, placing the material belt to be rolled between the protective film and the traction film, so that the material belt to be rolled, the protective film and the traction film jointly participate in rolling of rolling equipment; s3, arranging a stripping mechanism and stripping the rolled material belt from the traction film; s4, covering an isolation film on the stripped material belt to obtain a final material belt product; the device also comprises a rolling assembly, a traction film retracting and releasing mechanism, a stripping mechanism, a material belt retracting and releasing mechanism, a protective film retracting and releasing mechanism and an isolation film unwinding mechanism; the rolling method and the rolling system for the material belt have the advantage of reducing the influence of the roller on the adhesive force between the material belt and the traction film.
Description
Technical Field
The invention belongs to the technical field of battery manufacturing, and particularly relates to a rolling method and a rolling system for a material belt.
Background
In the production and manufacturing process of batteries (such as lithium batteries), metal materials such as copper, aluminum or lithium are inevitably used, and the metal materials need to be rolled into thin foil or strip (material strip), and finally different types of foil, diaphragm and the like with certain length are compounded and wound to form the core component of the battery. The rolling thickness of the ultra-thin lithium strip, which is one of the raw materials of the solid-state battery, is generally between 5um and 50um, that is, the raw material lithium strip (0.5 mm to 2.5 mm) or the base material needs to be further finish-rolled during the production and manufacturing process of the battery, that is, the raw material lithium strip is formed into the ultra-thin lithium strip with uniform and stable density and thickness between 5um and 50um by using corresponding rolling equipment and matching with a corresponding rolling method, so that the ultra-thin lithium strip meets the requirements of the production and manufacturing of the battery.
However, the lithium tapes (material tapes) manufactured in the prior art have the problems of relatively difficult or inconvenient peeling at the later stage; specifically, due to the characteristics of lithium metal, the lithium strip is prone to roll sticking during rolling and the tensile strength of the rolled lithium strip is greatly weakened, so that a film (PET) needs to be coated on the surface of the lithium strip during rolling to pull the rolled ultrathin lithium strip (also called a lithium-carrying film or a pulling film), and the lithium strip is isolated from a rolling roll. Further, in the prior art, the rolled lithium belt is firstly wound into a coil, and then the lithium belt coil is separately transferred to a separation process of the lithium carrying film (PET) and the lithium belt, and because a layer of silicone oil (used for lubrication during rolling) is arranged between the lithium carrying film (PET) and the lithium belt, the adhesive force between the traction film and the lithium belt can be gradually increased under the action of tension and a roller, so that the problem that the later traction film and the lithium belt are relatively difficult to peel or inconvenient to peel occurs, namely, the problem that the lithium belt is easily pulled to deform or tear due to the relatively large release force between the lithium belt and the traction film; that is, how to reduce the influence of the over-roll on the adhesion between the ultra-thin rolled lithium ribbon and the traction film is a technical problem to be solved in the present invention.
Disclosure of Invention
In view of the above, the present invention provides a rolling method and a strip rolling mechanism for reducing the influence of the passing rollers on the adhesion between the strip and the traction film.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a rolling method of a material belt comprises the following steps:
s1, respectively arranging a protective film and a traction film on rolling equipment;
s2, placing a material belt to be rolled between the protective film and the traction film, so that the material belt to be rolled, the protective film and the traction film jointly participate in rolling of the rolling equipment;
s3, arranging a stripping mechanism and stripping the rolled material belt from the traction film;
and S4, covering an isolation film on the stripped material belt to obtain a final material belt product.
As a further improvement of the rolling method of the material strip, a smoothing mechanism is arranged between the steps S3 and S4, and the smoothing mechanism performs smoothing operation on the stripped material strip.
As a further improvement of the rolling method of the strip, in step S2, one surface of the rolled strip is combined with the traction film, and the protective film is separated from the other surface of the strip.
As a further improvement of the rolling method of the material strip, the traction film after the peeling is completed is wound in step S3.
As a further improvement of the rolling method of the material belt, the protective film after separation is rolled.
As a further improvement of the rolling method of the material belt, the material belt is a lithium belt, and the thickness of the material belt obtained after rolling is 5-50 um.
As a further improvement of the rolling method of the strip of material, the strip of material before rolling is pretreated, which comprises the following steps:
s5, bending the two sides of the material belt to be rolled inwards;
and S6, performing blank pressing on two sides of the bent material belt to be rolled to enable the bent part of the material belt to be rolled to be attached to the main body part of the material belt to be rolled.
A material belt rolling system comprises a rolling assembly, a traction film retraction jack, a stripping mechanism, a material belt retraction jack, a protective film retraction jack and an isolation film retraction jack, wherein the material belt retraction jack is used for retracting a material belt to be rolled to the rolling assembly and winding the rolled material belt, the material belt passes through the rolling assembly, the rolling assembly comprises a first compression roller and a second compression roller, and a rolling channel for the material belt to be rolled to pass is formed between the first compression roller and the second compression roller;
the traction film take-up and pay-off mechanism is matched with the first compression roller, the traction film take-up and pay-off mechanism is used for taking up and pay-off a traction film, the traction film passes through the rolling channel and the stripping mechanism, the traction film enables the first compression roller to be isolated from a material belt to be rolled and carries out traction on the rolled material belt, the traction film and the material belt participate in rolling together, and the stripping mechanism is used for stripping the rolled material belt from the traction film;
the protective film retracting and releasing mechanism is matched with the second pressing roller and used for retracting and releasing a protective film, the protective film enables the second pressing roller to be isolated from the material belt through the rolling channel, and the protective film and the material belt participate in rolling together;
the isolating film unwinding mechanism and the material belt winding and unwinding mechanism are mutually matched, and an isolating film covers the surface of the stripped material belt.
As a further improvement of the strip rolling system, the strip rolling system further comprises a smoothing mechanism, and the smoothing mechanism is used for smoothing the strip peeled from the traction film.
As a further improvement of the material belt rolling system, the traction film is a PET film, the protection film is a PET film or a PP film, and the isolation film is a PP film.
As a further improvement of the material strip rolling system, the stripping mechanism includes an outer roller and an inner roller, the outer roller is sleeved outside the inner roller, the outer roller can rotate relative to the inner roller, the inner wall of the outer roller and the outer wall of the inner roller form a movable seal, the inner roller is provided with a positive pressure gas collecting area and a negative pressure gas collecting area, the surface of the outer roller is provided with a plurality of gas holes, the gas holes can respectively communicate with the positive pressure gas collecting area and the negative pressure gas collecting area along with the rotation of the outer roller relative to the inner roller, the area of the outer roller corresponding to the positive pressure gas collecting area forms a blowing area, the area of the outer roller corresponding to the negative pressure gas collecting area forms an adsorption area, the adsorption area is used for adsorbing the material strip to be stripped, and the blowing area is used for separating the stripped material strip from the outer roller.
As a further improvement of the material belt rolling system, the material belt rolling system further comprises a press roller, the press roller and the outer roller are used for allowing a material belt to be peeled off to pass through, the press roller is used for pressing the material belt to be peeled off on the outer roller, and when the press roller is pressed against the outer roller, the press roller corresponds to the adsorption area of the outer roller.
As a further improvement of the material belt rolling system, the material belt rolling system further comprises a lock seat, one end of the lock seat is connected with the inner roller, the other end of the lock seat is used for connecting an external component, and when the lock seat is in an unlocking state, the inner roller can rotate relative to the lock seat and adjust the position of the negative pressure gas collection area relative to the compression roller;
or when the lock seat is in a locking state, the position of the negative pressure gas collection area relative to the compression roller is locked.
Compared with the prior art, the invention has the following beneficial effects: through set up peeling means between rolling and final material area finished product rolling route, promptly, the material area after rolling then directly goes into the material area and from pulling the membrane in peeling off the process, thereby effectively reduced the material area after rolling and attached to the time of pulling on the membrane, in other words avoided or reduced traditional mode, can increase the material area gradually under tension and the effect of roller and pull the adhesive force between the membrane, and then solved and pulled and appear peeling off relative difficulty or peel off inconvenient technical problem between membrane and the lithium area in traditional mode post treatment.
Drawings
The foregoing and other objects, features and advantages of the invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Like reference numerals refer to like parts throughout the drawings, and the drawings are not intended to be drawn to scale in actual dimensions, emphasis instead being placed upon illustrating the principles of the invention.
FIG. 1 is a schematic structural diagram of a strip rolling system according to the present invention;
FIG. 2 is a schematic view of the peeling mechanism of the present invention;
FIG. 3 is a partial structural view of the peeling mechanism of the present invention;
FIG. 4 is a front view of the peeling mechanism of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the drawings and specific examples so that those skilled in the art can better understand the present invention and can implement the present invention, but the examples are not intended to limit the present invention, and in the present examples, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "one end," "the other end," and the like as used herein are for illustrative purposes only.
The embodiment provides a rolling method of a material belt, which comprises the following steps:
s1, respectively arranging a protective film and a traction film on rolling equipment; set up the protection film on rolling equipment and draw the membrane on the one hand to make the material area of treating rolling and rolling equipment's compression roller form the isolation, promptly, avoid material area (lithium area) to appear the problem of gluing the roller in rolling process.
S2, placing the material belt to be rolled between the protective film and the traction film, enabling the material belt to be rolled, the protective film and the traction film to jointly participate in rolling of rolling equipment, compounding one surface of the rolled material belt with the traction film, and separating the protective film from the other surface of the material belt; further, after the rolling of the material belt (lithium belt) is completed, the thickness of the material belt becomes very thin, the tensile capacity of the material belt becomes very weak, and the traction film is used for traction (also called lithium loading) of the material belt at the moment so as to facilitate the extraction of the rolled material belt and avoid the phenomenon that the material belt is subjected to tensile deformation or broken; and the protective film covering the other side of the material strip is rolled along with the material strip, and only needs to be peeled off at the moment, namely, the separated protective film is rolled.
S3, arranging a stripping mechanism 33 and stripping the rolled material belt from the traction film; the material belt does not need to be drawn in the battery manufacturing process, namely, the material belt needs to be drawn in the rolling and discharging process; further, after the material belt after finishing rolling is pulled out from rolling equipment, the traction film also finishes the use purpose, namely, the material belt after finishing rolling traction directly enters into and peels off the link, thereby effectively reducing the time of the material belt after rolling being attached to the traction film, namely avoiding or reducing the adhesive force between the material belt and the traction film under the action of tension and a roller, and further solving the technical problem that the traction film and the lithium belt in the later-stage treatment of the traditional mode are difficult to peel off or inconvenient to peel off. Further, the traction film after being stripped is rolled, namely, the traction film is recycled.
S4, covering an isolation film on the stripped material belt to obtain a final material belt product; cover the barrier film and can avoid the material area to appear the phenomenon of adhesion each other after the rolling, also can regard as the material area to regard as simultaneously and pull the membrane when putting into production and using, the barrier film and the material area at this moment do not need very high adhesive force certainly, or, the barrier film at this moment need be lower from the type power to the separation of material area and barrier film is convenient for.
Further, in a preferred embodiment, a smoothing mechanism 44 is provided between steps S3 and S4, and the smoothing mechanism 44 performs smoothing operation on the peeled tape. Specifically, because the adhesive force between the traction film and the material tape is relatively large, or the release force of the traction film is relatively large, the stripped material tape (lithium foil) has slight wrinkles, that is, the smoothing mechanism 44 rolls the material tape through two press rollers, so as to eliminate the wrinkles in the material tape. In this embodiment, the material belt is a lithium belt, and the material belt thickness obtained after rolling is between 5um-50um, such as 10, 15, 20, 25, 30, 35, 40, 45um again, that is, the specific rolling thickness of the material belt can be adjusted according to the actual use requirement.
Further, in a preferred embodiment, the strip of material before rolling is pretreated, which includes the following steps:
s5, bending the two sides of the material belt to be rolled inwards;
and S6, performing edge pressing on two sides of the bent material strip to be rolled to enable the bent portion of the material strip to be rolled to be attached to the main body portion of the material strip to be rolled. Specifically, when the lithium strip is directly rolled without pretreatment, the rolled strip (lithium foil) often cracks and forms gaps on two sides of a finished product due to the combined action of tension and the characteristic of good ductility of lithium metal in the rolling process; and the material area both sides that will through the mode of bending are bent, form the thickening portion of both sides thickening, thereby roll the material area again at last and can be better reduce the problem that the both ends side of rolling material area is current ftractureed or is formed the breach, and then promote the rolling yield in material area.
As shown in fig. 1 to 4, the embodiment further provides a material strip rolling system, which includes a rolling assembly 32, a traction film retracting mechanism, a peeling mechanism 33, a material strip retracting mechanism, and an isolation film unwinding mechanism, where the material strip retracting mechanism is configured to unwind a material strip to be rolled to the rolling assembly 32 and wind the rolled material strip, and the material strip passes through the rolling assembly 32, the rolling assembly 32 includes a first pressing roller 34 and a second pressing roller 35, and a rolling channel for the material strip to be rolled to pass through is formed between the first pressing roller 34 and the second pressing roller 35. The traction film take-up and pay-off mechanism is matched with the first compression roller 34 and used for taking up and paying off a traction film, the traction film passes through the rolling channel and the peeling mechanism 33, the traction film enables the first compression roller 34 to be isolated from the material strip, the traction film and the material strip participate in rolling together, the rolled material strip is attached to the traction film, and the peeling mechanism 33 is used for peeling the rolled material strip from the traction film. The isolating film unwinding mechanism and the material belt unwinding mechanism are mutually matched and cover the surface of the stripped material belt with an isolating film.
Further, the traction film unwinding rotating member 36 and the traction film winding rotating member 37 are used for unwinding and winding the traction film 38, that is, the traction film unwinding rotating member 36 and the traction film winding rotating member 37 rotate synchronously with the first pressing roller 34 and the peeling mechanism 33 in the rolling assembly 32 in the use process, so that the traction film 38 is transferred from the traction film unwinding rotating member 36 to the traction film winding rotating member 37, the traction film 38 is isolated between the material belt (lithium foil) to be rolled and the first pressing roller 34, and the traction film 38 is used for drawing the rolled material belt (lithium foil) (the rolled material belt has a weak tensile capacity, and the material belt is easily deformed or broken due to direct drawing). In this embodiment, pull the membrane and be the PET film, the PET film has higher adhesive force or has higher from the type power for the material area, and then also makes the material area can not break away from pulling easily on the membrane under the effect of satisfying the traction force to the material area.
Further, the material tape unwinding mechanism comprises a material tape unwinding rotating member 39 and a material tape winding rotating member 40; specifically, the material strip unwinding rotating member 39 is used for unwinding the material strip to be rolled, and the material strip winding rotating member 40 winds the rolled material strip into a coil. Further, only the isolating film unwinding rotating member 41 is arranged in the isolating film unwinding mechanism, and the isolating film unwinding rotating member 41 is used for loading the isolating film to be used; further, in the use, the barrier film unreels and rotates piece 41 and material area rolling and rotates piece 40 and mutually supports, that is to say, owing to need cover the surface in material area (prevent that the lithium strip from rolling up each other), consequently, when material area rolling and rotate piece 40 carries out the rolling to the material area after rolling, also transfer the barrier film that the barrier film unreeled and rotated piece 41 in the nature in step to the material area rolling and rotate piece 40, promptly, form the isolation in the one side that the material area was changeed. In this embodiment, the barrier film is the film of PP material, and the barrier film except can providing certain traction force for the material area when the material area finally drops into production, and the release force between barrier film and the material area is less relatively, and then makes the material area easily separate with the barrier film.
Further, the material belt rolling system further comprises a protective film retracting and releasing mechanism, the protective film retracting and releasing mechanism is matched with the second pressing roller 35, the protective film retracting and releasing mechanism is used for retracting and releasing a protective film, the protective film enables the second pressing roller 35 to be isolated from the material belt through a rolling channel, and the protective film and the material belt participate in rolling together. The protective film unwinding and winding mechanism comprises a protective film unwinding rotating piece 42 and a protective film winding rotating piece 43, and the protective film is used for isolating the material strip to be rolled from the second pressing roller 35 so as to avoid the phenomenon that the material strip is stuck to the roller; furthermore, the protection film is the film of PET material or the film of PP material.
As shown, in the preferred embodiment, a smoothing mechanism 44 is also included, the smoothing mechanism 44 being used to smooth the strip of material peeled from the traction film. Specifically, since the adhesive force between the traction film and the material tape is relatively large, or the release force of the traction film is relatively large, the stripped material tape (lithium foil) has slight wrinkles, that is, the smoothing mechanism 44 performs roll correction on the material tape through two press rollers, so as to eliminate wrinkles in the material tape, that is, facilitate final winding of the following material tape.
As shown in fig. 2-4, in the preferred embodiment, the peeling mechanism 33 includes an outer roller 1 and an inner roller 2, the outer roller 1 is sleeved outside the inner roller 2, and the outer roller 1 is rotatably connected to the inner roller 2, i.e., the outer roller 1 is rotatable relative to the inner roller 2. The inner roller 2 is provided with a positive pressure gas collecting area 3 and a negative pressure gas collecting area 4 respectively, the surface of the outer roller 1 is provided with a plurality of gas holes 5, when the outer roller 1 rotates relative to the inner roller 2, the gas holes 5 can be communicated with the positive pressure gas collecting area 3 and the negative pressure gas collecting area 4 respectively, further, the area of the outer roller 1 corresponding to the positive pressure gas collecting area 3 forms a blowing area 6, the area of the outer roller 1 corresponding to the negative pressure gas collecting area 4 forms an adsorption area 7, namely, when the rotation angle of the inner roller 2 is unchanged, no matter how the outer roller 1 rotates, the adsorption area 7 and the blowing area 6 on the surface of the outer roller 1 are not changed all the time, for example, no matter how the outer roller 1 rotates, the left surface of the outer roller 1 is always the adsorption area 7, and the bottom surface of the outer roller 1 is always the blowing area 6. Specifically, through the mutual matching of the inner roller 2 and the outer roller 1, and the suction area 7 and the air blowing area 6 are respectively formed on the surface of the outer roller 1, when the material belt is stripped, the material belt to be stripped is sucked and fixed on the surface of the outer roller 1 under the action of negative pressure. Furthermore, in the process of separating the traction film from the material belt, the material belt is adsorbed and fixed on the surface of the outer roller 1, so that the tensile property of the foil is effectively improved, and the problem that the foil is deformed or torn due to tension is avoided or reduced; meanwhile, due to the self viscosity of the foil, the foil after the protective film is peeled still has a certain adhesive force on the outer roller 1, at the moment, when the foil is driven to correspond to the air blowing area 6 along with the rotation of the outer roller 1, compressed air is filled between the peeled foil and the outer roller 1 through the air holes 5, so that the adhesive force of the foil relative to the outer roller 1 is eliminated, or the foil is pushed away from the surface of the outer roller 1 through the compressed air, and finally the peeled foil is wound.
As shown in fig. 2-4, in a preferred embodiment, the peeling mechanism 33 further includes a press roller 8, a telescopic mechanism 9, a swing arm 10 and a frame (not shown), the outer roller 1 and/or the inner roller 2 is connected to the frame, one end of the swing arm 10 is rotatably connected to the press roller 8, the other end is rotatably connected to the frame, one end of the telescopic mechanism 9 is fixed to the frame by a bolt, and the other end is hinged to the swing arm 10, the telescopic mechanism 9 in this embodiment may be an air cylinder, a hydraulic cylinder or an electric telescopic rod, and the swing arm 10 can be driven to move relative to the outer roller 1 by the telescopic mechanism 9, that is, the press roller 8 is driven to press against the outer roller 1, or the press roller 8 is driven to be detached from the outer roller 1.
Further, a foil (workpiece) to be peeled is arranged between the compression roller 8 and the outer roller 1, the compression roller 8 is used for pressing the workpiece to be peeled on the outer roller 1, and when the compression roller 8 is pressed with the outer roller 1, the compression roller 8 corresponds to the adsorption area 7 of the outer roller 1; that is, when the outer roller 1 rotates and the air holes 5 on the surface of the outer roller 1 correspond to the negative pressure air collecting area 4 on the inner roller 2, at this time, under the action of the vacuum negative pressure of the negative pressure air collecting area 4, the surface or area of the outer roller 1 corresponding to the negative pressure air collecting area 4 generates an adsorption force to suck the foil (product) to be peeled off, thereby reducing the tension force applied to the foil to be peeled off from the length direction thereof (or the force applied to the foil at this time is mainly a force relative to the thickness direction thereof, that is, the tensile strength of the foil in the direction is greater than the tension force applied to the foil from the length direction), and further enabling the foil to be easily peeled off from the traction film. That is to say, in the peeling process of the foil, the compression roller 8 pulls the foil to be peeled to enable the foil to be attached to the roller surface of the outer roller 1 so as to enable the foil to be smoothly adsorbed and fixed on the outer roller 1, and further, the peeled protective film can be attached to one side of the compression roller 8 to be removed under the action of tension, so that the protective film and the foil are completely separated; further, after the front end of the foil rotates out of the adsorption area 7 along with the rotation of the outer roller 1, the adsorption force of the outer roller 1 on the foil disappears.
As shown in fig. 4, in a preferred embodiment, the peeling mechanism 33 further includes a lock base 11, one end of the lock base 11 is connected to the inner roller 2, the other end of the lock base 11 is used for connecting an external component (a frame), and when the lock base 11 is in an unlocked state, the inner roller 2 can rotate relative to the lock base 11 and adjust the position of the negative pressure gas collection area 4 relative to the pressure roller 8; or when the lock base 11 is in the locking state, the position of the negative pressure gas collection area 4 relative to the compression roller 8 is locked. The lock base 11 in this embodiment is sleeved outside the rotating shaft of the inner roller 2, and the lock base 11 locks or unlocks the inner roller 2 through a bolt, and further, the lock base 11 in this embodiment is of a hoop structure; the position that sets up of lock seat 11 can make the absorption district 7 on the outer roller 1 and blow district 6 can carry out nimble adjustment according to the user demand of difference, that is to say, when needs change the adjustment interior roller 2, then unblock lock seat 11 and rotate interior roller 2, and then rotate and adjust the absorption district 7 on the outer roller 1 on the best point of peeling off.
As shown in fig. 4, in a preferred embodiment, the positive pressure gas collecting area 3 and the negative pressure gas collecting area 4 are arranged at an interval and form an included angle with respect to the circumferential direction or circumferential direction of the inner roller 2; the included angle is 60-120 degrees. Further, a first air passage 12 and a second air passage 13 are arranged in the inner roller 2, one end of the first air passage 12 is communicated with the positive pressure gas collecting area 3, and the other end of the first air passage 12 is used for connecting a compressed gas source or gas compression equipment, namely, the gas is released into the positive pressure gas collecting area 3 through the first air passage 12, and finally the gas is ejected out of the gas holes 5 corresponding to the positive pressure gas collecting area 3 in the outer roller 1, so that the peeled foil is pushed away from the outer roller 1. Further, the one end and the negative pressure gas collection district 4 of second air flue 13 are linked together, and the other end is used for connecting negative pressure equipment, that is, when bleeding through second air flue 13, can make negative pressure (be less than outside atmospheric pressure) produce in the negative pressure gas collection district 4, and further, the gas pocket 5 corresponding with negative pressure gas collection district 4 just can adsorb the foil material of treating the separation on outer roller 1, and perhaps outside atmospheric pressure will treat that the foil material of separating compresses tightly on outer roller 1. Further, in this embodiment, the positive pressure gas collecting area 3 and the negative pressure gas collecting area 4 are recessed relative to the inner roller 2, that is, a gap is formed between the inner wall of the outer roller 1 and the outer wall of the inner roller 2, so that the compressed gas can be relatively uniformly ejected from the gas holes 5, that is, a uniform thrust is formed on the gas blowing area 6 of the outer roller 1, or a uniform suction force or a fixing force is formed on the adsorption area 7 of the outer roller 1.
Compared with the prior art, the invention has the following beneficial effects: through set up peeling means between rolling and final material area finished product rolling route, promptly, the material area after rolling then directly goes into the material area and from pulling the membrane in peeling off the process, thereby effectively reduced the material area after rolling and attached to the time of pulling on the membrane, in other words avoided or reduced traditional mode, can increase the material area gradually under tension and the effect of roller and pull the adhesive force between the membrane, and then solved and pulled and appear peeling off relative difficulty or peel off inconvenient technical problem between membrane and the lithium area in traditional mode post treatment.
In this specification, unless explicitly stated or limited otherwise, a first feature may be "on" or "under" a second feature such that the first and second features are in direct contact, or the first and second features are in indirect contact via an intermediate. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature "under," "beneath," and "under" a second feature may be directly under or obliquely under the second feature, or may simply mean that the first feature is at a lesser elevation than the second feature.
In the description herein, reference to the description of the terms "preferred embodiment," "yet another embodiment," "other embodiments," or "specific examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Moreover, various embodiments or examples and features of various embodiments or examples described in this specification can be combined and combined by one skilled in the art without being mutually inconsistent.
Although embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present application, and that variations, modifications, substitutions and alterations may be made to the above embodiments by those of ordinary skill in the art within the scope of the present application.
Claims (10)
1. The rolling method of the material belt is characterized by comprising the following steps:
s1, respectively arranging a protective film and a traction film on rolling equipment;
s2, placing a material belt to be rolled between the protective film and the traction film, so that the material belt to be rolled, the protective film and the traction film jointly participate in rolling of the rolling equipment;
step S2 further includes preprocessing the strip before rolling, which includes the following steps:
s21, bending the two sides of the material belt to be rolled inwards;
s22, performing blank pressing on two sides of the bent material belt to be rolled to enable a bent portion of the material belt to be rolled to be attached to a main body portion of the material belt to be rolled;
s3, arranging a stripping mechanism and stripping the rolled material belt from the traction film;
and S4, covering an isolation film on the stripped material belt to obtain a final material belt product.
2. The rolling method for the material strip according to claim 1, wherein a smoothing mechanism is arranged between steps S3 and S4, and the smoothing mechanism performs smoothing operation on the stripped material strip.
3. The rolling method for material strip according to claim 1 or 2, wherein in step S2, one side of the rolled material strip is combined with the traction film, and the protection film is separated from the other side of the material strip.
4. The rolling method for a material strip according to claim 1 or 2, wherein the traction film after the peeling is completed is wound in step S3.
5. Method for rolling a strip of material as claimed in claim 3, wherein said protective film is wound after separation.
6. The rolling method for material belt according to claim 1, wherein the material belt is lithium belt, and the thickness of the material belt obtained after the rolling is finished is 5um-50um.
7. A material belt rolling system is characterized in that: the device comprises a rolling assembly, a traction film retracting and releasing mechanism, a stripping mechanism, a material belt retracting and releasing mechanism, a protective film retracting and releasing mechanism and an isolation film unwinding mechanism, wherein the material belt retracting and releasing mechanism is used for unwinding a material belt to be rolled to the rolling assembly and winding the rolled material belt, the material belt passes through the rolling assembly, the rolling assembly comprises a first compression roller and a second compression roller, and a rolling channel for the material belt to be rolled to pass is formed between the first compression roller and the second compression roller;
the traction film take-up and pay-off mechanism is matched with the first compression roller, the traction film take-up and pay-off mechanism is used for taking up and pay-off a traction film, the traction film passes through the rolling channel and the stripping mechanism, the traction film enables the first compression roller to be isolated from a material belt to be rolled and carries out traction on the rolled material belt, the traction film and the material belt participate in rolling together, and the stripping mechanism is used for stripping the rolled material belt from the traction film;
the protective film retracting and releasing mechanism is matched with the second pressing roller and used for retracting and releasing a protective film, the protective film enables the second pressing roller to be isolated from the material belt through the rolling channel, and the protective film and the material belt participate in rolling together;
the isolating film unwinding mechanism and the material belt winding and unwinding mechanism are mutually matched and cover an isolating film on the surface of the stripped material belt;
the stripping mechanism comprises an outer roller and an inner roller, the outer roller is sleeved outside the inner roller, the outer roller can rotate relative to the inner roller, the inner wall of the outer roller and the outer wall of the inner roller form movable seal, a positive pressure gas collecting area and a negative pressure gas collecting area are arranged on the inner roller, a plurality of air holes are formed in the surface of the outer roller, the air holes can be respectively communicated with the positive pressure gas collecting area and the negative pressure gas collecting area along with the rotation of the outer roller relative to the inner roller, an air blowing area is formed in the area of the outer roller corresponding to the positive pressure gas collecting area, an adsorption area is formed in the area of the outer roller corresponding to the negative pressure gas collecting area, the adsorption area is used for adsorbing a material strip to be stripped, and the air blowing area is used for separating the stripped material strip from the outer roller;
the device comprises an outer roller and a pressing roller, wherein the outer roller is arranged on the outer side of the outer roller, the pressing roller is used for pressing the material belt to be peeled off on the outer roller, and when the pressing roller is pressed by the outer roller, the pressing roller corresponds to the adsorption area of the outer roller.
8. The strip rolling system of claim 7, wherein: the material belt stripping device further comprises a flattening mechanism, and the flattening mechanism is used for flattening the material belt stripped from the traction film.
9. Strip rolling system according to claim 7 or 8, wherein: the traction film is a PET film, the protective film is a PET film or a PP film, and the isolation film is a PP film.
10. The strip rolling system of claim 7, wherein: the device also comprises a lock seat, one end of the lock seat is connected with the inner roller, the other end of the lock seat is used for connecting an external component, and when the lock seat is in an unlocking state, the inner roller can rotate relative to the lock seat and adjust the position of the negative pressure gas collection area relative to the compression roller;
or when the lock seat is in a locking state, the position of the negative pressure gas collection area relative to the compression roller is locked.
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| CN202211203097.7A CN115475831B (en) | 2022-09-29 | 2022-09-29 | Material belt rolling method and material belt rolling system |
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| CN202211203097.7A CN115475831B (en) | 2022-09-29 | 2022-09-29 | Material belt rolling method and material belt rolling system |
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| CN115475831A CN115475831A (en) | 2022-12-16 |
| CN115475831B true CN115475831B (en) | 2023-04-07 |
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| CN108630883B (en) * | 2017-03-20 | 2020-10-02 | 宁德时代新能源科技股份有限公司 | Calendering device |
| CN108188180B (en) * | 2018-03-05 | 2024-03-01 | 中创新航技术研究院(江苏)有限公司 | Double-lithium foil preparation device and preparation method |
| CN208359249U (en) * | 2018-04-26 | 2019-01-11 | 福建省新奇卫生材料有限公司 | A kind of heat roller device |
| CN210136958U (en) * | 2019-08-07 | 2020-03-10 | 宁德时代新能源科技股份有限公司 | Device for lithium supplement of pole piece |
| FR3118719B1 (en) * | 2021-01-14 | 2023-01-06 | Commissariat Energie Atomique | LITHIUM METAL STRIP ROLLING DEVICE |
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Non-Patent Citations (1)
| Title |
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| 张灵杰等.高精度冷轧薄带钢轧制过程分析.山东冶金.2007,29(04),第44-45页. * |
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Address after: No. 20 Majun Street, Dongyong Town, Nansha District, Guangzhou City, Guangdong Province, 511400 Patentee after: Guangdong Jiemeng Intelligent Equipment Co.,Ltd. Country or region after: China Address before: No. 18, Mafa Street, Dongyong Town, Nansha District, Guangzhou City, Guangdong Province, 511475 Patentee before: Guangdong jiemeng Intelligent Equipment Co.,Ltd. Country or region before: China |